java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft
    at net.doubledoordev.pay2spawn.util.Helper.getGameProfileFromName(Helper.java:172) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.Helper.formatText(Helper.java:125) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.Helper.formatText(Helper.java:199) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.Helper.formatText(Helper.java:215) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.Helper.formatText(Helper.java:215) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.Helper.formatText(Helper.java:215) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.Helper.formatText(Helper.java:206) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.Helper.formatText(Helper.java:215) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.Helper.formatText(Helper.java:215) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.Helper.formatText(Helper.java:206) ~[Helper.class:?]
    at net.doubledoordev.pay2spawn.util.CountdownTickHandler$ServerQueEntry.end(CountdownTickHandler.java:187) ~[CountdownTickHandler$ServerQueEntry.class:?]
    at net.doubledoordev.pay2spawn.util.CountdownTickHandler.tickEvent(CountdownTickHandler.java:103) ~[CountdownTickHandler.class:?]
    at cpw.mods.fml.common.eventhandler.ASMEventHandler_405_CountdownTickHandler_tickEvent_TickEvent.invoke(.dynamic) ~[?:?]
    at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) ~[ASMEventHandler.class:?]
    at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) [EventBus.class:?]
    at cpw.mods.fml.common.FMLCommonHandler.onPreServerTick(FMLCommonHandler.java:260) [FMLCommonHandler.class:?]
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:536) [MinecraftServer.class:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
    at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.Minecraft
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) ~[launchwrapper-1.11.jar:?]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_65]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_65]
    ... 19 more